A large-scale arc ceiling system and its construction method

Abstract

The present invention discloses a large-scale curved ceiling system and a construction method thereof, which adopts the method of "equal plates and unequal seams", that is, the width of the plate adopts a fixed value, and the hyperbolic surface is adjusted by changing the width of the plate seam, and the "decorative curved surface" of the new scheme BIM model and the original scheme BIM model adopting this method completely overlap; the plate width is fixed, so there is no need to process the curved ceiling, which solves the problem that the plate forming processing is difficult due to the variable cross-section setting of the curved ceiling, and it is difficult to ensure the overall hyperbolic curvature of the curved ceiling. At the same time, the plates can also be mass-produced, which greatly improves the construction efficiency and ensures the construction quality; by arranging a second connecting piece on the base steel structure, fixing the mounting tube on the second connecting piece, fitting the curvature of the inner curved surface of the base steel structure, and mounting the first connecting piece on the mounting tube, the curved ceiling is more conveniently hung, which solves the technical problem of inconvenient construction of large curved ceilings.

Description

Technical Field

[0001] The present invention relates to the technical field of ceiling construction, and particularly relates to a large-scale arc ceiling system and a construction method thereof. Background Art

[0002] In large public spaces, commercial venues or high-class residences, as people's pursuit of beautiful and unique interior decoration effects increases day by day, architectural designers design more novel, modern and fashionable decorative structures when the structural stress permits. Such emerging new structural forms also pose new challenges to on-site decorative construction.

[0003] For a large-scale arc ceiling system, which is composed of multiple arc-shaped ceiling boards, due to the unconventionality of the ceiling boards, including but not limited to extremely long length or width, extremely large curvature, irregular shape, etc., and the ceiling boards may need to achieve a relatively special hyperbolic visual effect after combined installation. Therefore, it is necessary to conduct technical research on the installation aspect to find and determine a suitable installation method.

[0004] Especially for the arc-shaped ceiling boards that are spaced apart and not fully covered, since there is a gap between the boards horizontally and they do not continuously overlap, and still need to maintain a continuous hyperbolic surface as a whole, it is particularly difficult to install. It often requires BIM modeling in advance and trying operations or changing parameters in the model.

[0005] On this basis, a solution method for this working condition is proposed: the board gap (the horizontal gap between the boards) always maintains a fixed value during the process of surface change, and the entire hyperbolic surface change is mainly adjusted by the board width of the arc-shaped ceiling board, that is, the "equal gap and unequal board" method is used to achieve the hyperbolic curvature. However, since the hyperbolic surface is generated by a Bezier curve, in order to ensure a fixed-width board gap, the widths of the same board will be different. The bottom cross-sectional width of the arc-shaped ceiling board is greater than the upper cross-sectional width (the shape is fan-shaped after being flattened), and the fan-shaped strip board can only be realized by welding process. Due to the narrow board surface, the thermal melting deformation and stress change generated during the welding process are uncontrollable, and the final board surface radian cannot match the radian in the BIM model, and ultimately affects the decorative effect.

[0006] Therefore, it is necessary to design a more effective way to solve these problems. Summary of the Invention

[0007] The present invention provides a large-scale arc ceiling system and a construction method thereof, which are used to solve the technical problems in the construction of a large-scale arc ceiling system, such as inconvenient installation of arc-shaped ceiling boards, long input time, high cost, the "equal gap and unequal board" method causing the boards to need to be processed into variable cross-sections, resulting in difficult forming and processing of the boards and difficult to ensure the hyperbolic curvature.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] The present invention provides a large-scale arc ceiling system, including a base steel structure, installation pipes, arc-shaped ceilings, first connectors, and second connectors; the base steel structure includes a grid structure composed of main keels and secondary keels, which is convex in the vertical direction and also convex in the horizontal direction, forming an overall hyperbolic structure; the main keels are arranged at intervals and in an arc shape, the secondary keels are distributed at intervals in the length direction of the main keels and are staggered with the main keels, and the main keels are in an upwardly convex arc shape; the installation pipes are horizontally arranged throughout the inner arc surface of the base steel structure, fixed to the inner side of the main keels, perpendicular to the main keels and distributed at intervals in the length direction of the main keels, and the installation pipes are in an overall arc shape; the arc-shaped ceilings are arranged on the installation pipes and distributed at intervals, and the overall arc surface of the arc-shaped ceilings is on one arc surface, and the arc surface radian of the overall arc-shaped ceilings fits the radian of the inner arc surface of the base steel structure;

[0010] The arc-shaped ceiling includes four plate bodies, namely a first plate body, a second plate body, a third plate body, and a fourth plate body; each plate body of the arc-shaped ceiling is an arc-shaped long strip plate, and inwardly bent flanges are provided on both sides of the outer arc surface of each plate body; the ends of the four plate bodies are spliced and arranged along the length direction of the main keel; the first plate body is arranged at the bottom position of the main keel, the bottom end of the second plate body is spliced with the top end of the first plate body, the top end of the second plate body is spliced with the bottom end of the third plate body, and the top end of the third plate body is spliced with the bottom end of the fourth plate body;

[0011] The first connector is arranged between the installation pipe and the arc-shaped ceiling for fixing and adjusting the arc-shaped ceiling; the first connector includes a first hoop, a connecting plate, a connecting angle code, and a clamping plate;

[0012] The first hoop is arranged around the installation pipe and distributed at intervals on the installation pipe. Two first strip holes are opened on the plate surface near both ends of the connecting plate. The first strip holes are arranged along the long direction of the connecting plate. One side of the first strip holes is fixed to the first hoop by bolts, and the other side of the first strip holes is fixed to the connecting angle code by bolts; the connecting angle code is an L-shaped plate, its vertical part is connected to the connecting plate by bolts, and its horizontal part is fixed to the middle of the clamping plate by bolts; the clamping plate is a U-shaped strip plate with an opening downward, and both ends of the clamping plate are clamped inside the flange of the arc-shaped ceiling; the second connector is arranged between the main keel and the installation pipe for fixing the installation pipe.

[0013] Preferably, the main keel is an H-shaped steel, the installation pipe is a round steel pipe, and the installation pipe is composed of multiple short pipes connected together.

[0014] Preferably, the second connecting member includes a first fixing plate, a second fixing plate, a tie bolt, and a second hoop; the first fixing plate is a rectangular plate, arranged on the bottom surface of the lower flange plate of the main keel, and the short side of the first fixing plate extends beyond the lower flange of the main keel; the second fixing plate includes two strip plates, arranged on the top surface of the upper flange plate of the main keel, and both ends of the second fixing plate extend beyond the upper flange of the main keel; the tie bolt passes through the corner of the first fixing plate and both ends of the second fixing plate to fix the first fixing plate and the second fixing plate on the main keel; the second hoop is in the shape of Ω and includes a ring part and an end part.

[0015] Preferably, the ring part of the second hoop is buckled on the outer side surface of the installation pipe, and the end part is fixed on the first fixing plate through a tie rod.

[0016] Preferably, the second connecting member further includes a suspender. One end of the suspender is arranged in the middle of the first fixing plate, and the other end of the suspender is provided with a third fixing plate; the ring part of the second hoop is buckled on the outer side surface of the installation pipe, and the end part is fixed on the third fixing plate through a bolt.

[0017] Preferably, both ends of the clamping plate are fixed to the folded edge of the arc-shaped ceiling by self-tapping screws.

[0018] Preferably, two second holes are arranged on the plate surface of the clamping plate near both ends. The second holes are arranged along the length direction of the clamping plate, and fastening bolts are arranged in the second holes for pressing the clamping plate and the arc-shaped ceiling tightly.

[0019] Preferably, the four plate bodies are connected by inserting core members; the inserting core members are U-shaped plates. One end is inserted and arranged on the inner side surface of the end of the plate body and fixed by bolts, and the other end extends outwards for inserting another plate body.

[0020] The present invention also provides a construction method for the above-mentioned large arc-shaped ceiling system, including the following steps:

[0021] Step 1, detailed design: Establish a BIM model of the overall arc-shaped ceiling. Divide the arc-shaped ceiling into four plate bodies in the length direction in the model, and then determine the quantity, length, and lateral spacing of each plate body, and determine the jointing method, that is, the width of each plate is the same, and the lateral spacing between plates is adjustable;

[0022] Step 2, modeling rehearsal: Scan the on-site basic steel structure, collect information and then perform BIM modeling. Rehearse the installation process in the model, mark the installation points, and determine the curvature, length, and installation spacing of the installation pipe, and determine the hanging and installation points of the arc-shaped ceiling on the installation pipe;

[0023] Step 3, Installation pipe construction: Mark the installation points of the installation pipe on-site according to the installation points determined in Step 1. After completing the marking, install the second connecting piece at the marked points, then pass the installation pipe through the second hoop and fix it. The installation pipe is installed by welding after fixation and then continues to be threaded. Through preliminary shaping, an overall arc-shaped installation pipe is formed to fit the inner arc surface radian of the base steel structure;

[0024] Step 4, Mark the installation pipe according to the hanging installation points in Step 1 to facilitate the installation of the first connecting piece;

[0025] Step 5, Curved ceiling installation: First, install the first plate body. Lift the first plate body to the installation position, install the first connecting piece according to the marked points in Step 3, fix the first hoop to the installation pipe, and snap and fix the clamping plate to the inner side of the folded edge of the first plate body to complete the installation of the first plate body in sequence; Then install the second plate body, lift the second plate body and splice and fix the end of the second plate body with the end of the first plate body; Then repeat the above operations to complete the installation of the third plate body and the fourth plate body in sequence;

[0026] Step 6, Curved ceiling adjustment: Observe at multiple angles and positions on-site, and adjust the curved ceiling according to the actual visual perception and visual effect, including adjusting the plate spacing, curvature, and angle of the curved ceiling;

[0027] Plate spacing adjustment: Adjust the position of the first hoop on the installation pipe to achieve the lateral displacement of the curved ceiling, thereby realizing the adjustment of the plate spacing;

[0028] Curvature adjustment: Adjust the connection positions of the first hoop, connecting angle code, and connecting plate to adjust the distance between the curved ceiling and the installation pipe, thereby realizing the curvature adjustment of the curved ceiling;

[0029] Angle adjustment: Adjust the rotation angle of the connecting angle code and the connecting plate to adjust the plate surface orientation of the curved ceiling, thereby realizing the angle adjustment of the curved ceiling;

[0030] The three adjustment methods cooperate with each other until the inner arc surface of the curved ceiling is adjusted to be smooth and flat without obvious warping and undulation;

[0031] Preferably, before the installation of the curved ceiling, prefabrication is carried out on the ground, including installing core inserts at both ends of the second plate body and the ends of the third plate body; The clamping plate is pre-snapped on the inner side of the folded edge of the curved ceiling to facilitate subsequent installation and fixation work.

[0032] The beneficial effects of the present invention are reflected in:

[0033] 1) The present invention provides a large-scale arc ceiling system and its construction method, proposing a new solution. A new method of "equal plates but unequal joints" is adopted, that is, the width of the plates adopts a fixed value, and the hyperboloid is adjusted by changing the width of the plate joints. The "decoration surface" of the BIM model of the new solution adopting this method completely coincides with that of the original solution BIM model, only the jointing method has changed, and there is no obvious difference in the visual effect; by fixing the plate width, it is thus unnecessary to process the arc ceiling, solving the problems that due to the variable cross-section setting of the arc ceiling, the forming and processing of the plates are difficult, and it is difficult to ensure the hyperboloid curvature of the overall arc ceiling. At the same time, the plates can also be mass-produced, greatly improving the construction efficiency and ensuring the construction quality.

[0034] 2) The present invention provides a large-scale arc ceiling system and its construction method. The overall basic steel structure is a hyperboloid structure, and arc ceilings are hung and arranged based on the basic steel structure. They are numerous in quantity, extremely long in length, high in distribution density, large in curvature and require end splicing, resulting in great construction difficulty; by setting second connectors on the basic steel structure and fixing pipes on the second connectors, multiple sections of the installed pipes are connected to form a complete arc pipe, which fits the inner arc surface curvature of the basic steel structure. First connectors are installed on the installed pipes, thus more conveniently hanging the arc ceilings; only a crane, a lifting platform and a few workers are needed to complete the construction, solving the technical problem of inconvenient construction of large-scale arc ceilings, greatly improving the construction efficiency, reducing the consumption of manpower and material resources, saving costs, and having good economy.

[0035] 3) The present invention provides a large-scale arc ceiling system and its construction method. Because there are numerous arc ceilings and there are many connection nodes, there are errors during installation, and after installation, there will be situations where the overall arc ceiling has an uneven curvature in appearance, with irregularities, depressions, protrusions or warping. By adjusting the first connectors, the angles, curvatures and the widths of the plate joints between adjacent plates of the arc ceilings can be adjusted, thus ensuring the hyperboloid structure of the arc ceilings and achieving a smooth arc surface of the arc ceilings when observed from multiple angles, reaching an aesthetic visual effect.

[0036] 4) The present invention provides a large-scale arc ceiling system and its construction method. In order to match the transverse curvature of the inner arc surface of the basic steel structure, the installed pipes adopt the method of "replacing the curve with folds", that is, the polyline connection of multiple sections of branch pipes to form an arc as a whole, with relatively small stress, convenient installation and easy adjustment; in order to match the vertical curvature of the inner arc surface of the basic steel structure, the multiple plate bodies of the arc ceilings are connected by inserting core members, also adopting the method of "replacing the curve with folds" to achieve an arc shape of the arc ceilings in the vertical direction, facilitating installation and reducing the stress and deformation influence of the arc ceilings.

[0037] Other features and advantages of the present invention will be set forth in the following description, and will be partly apparent from the description, or may be learned by practicing the present invention; the main objects and other advantages of the present invention can be achieved and obtained by the solutions specifically pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a side sectional view of the arc-shaped ceiling system of the present invention.

[0039] Figure 2 is a three-dimensional Figure 1 .

[0040] Figure 3 is a three-dimensional Figure 2 .

[0041] Figure 4 is a partial enlarged view of the arc-shaped ceiling of the present invention.

[0042] Figure 5 is an enlarged view of the first connecting member and the second connecting member of the present invention.

[0043] Figure 6 is the structure of the first connecting member of the present invention Figure 1 .

[0044] Figure 7 is the structure of the first connecting member of the present invention Figure 2 .

[0045] Figure 8 is the structure of the second connecting member of the present invention Figure 1 .

[0046] Figure 9 is the structure of the second connecting member of the present invention Figure 2 .

[0047] Figure 10 is a front view of the core insert of the present invention.

[0048] Figure 11 is a sectional view of the core insert of the present invention.

[0049] Reference numerals: 1 - basic steel structure, 11 - main keel, 12 - secondary keel, 2 - installation pipe, 3 - arc-shaped ceiling, 31 - first plate body, 32 - second plate body, 33 - third plate body, 34 - fourth plate body, 4 - first connecting member, 41 - first hoop, 42 - connecting plate, 43 - connecting angle, 44 - clamping plate, 45 - first hole, 46 - second hole, 47 - fastening bolt, 48 - self-tapping screw, 5 - second connecting member, 51 - first fixing plate, 52 - second fixing plate, 53 - tie bolt, 54 - second hoop, 55 - suspension rod, 56 - third fixing plate, 6 - core insert. Detailed implementation manners

[0050] The technical solution of the present invention will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, rather than being construed as a limitation to the technical solution of the present invention.

[0051] Embodiment: In this embodiment, taking the interior decoration construction project of a certain exhibition hall as an example, the overall basic steel structure 1 is a hyperbolic structure, and the overall arc-shaped ceiling 3 hung and arranged based on the basic steel structure 1 is also a hyperbolic structure. The jointing method of the original node scheme is that the plate joint always remains 200 mm during the process of surface change, and the entire hyperbolic change is mainly adjusted through the plate width of the aluminum plate, that is, the "equal joint but unequal plate" method is adopted to achieve the hyperbolic curvature. However, since the hyperbolic surface is generated by a Bezier curve, in order to ensure a 200-mm plate joint, the widths of different parts of the same plate will be different. The cross-sectional width of the bottom arc-shaped ceiling 3 is greater than that of the upper part, and the shape after being flattened is fan-shaped. The fan-shaped strip plates can only be realized by welding technology. Due to the narrow plate surface, the thermal melting deformation and stress change generated during the welding process are uncontrollable, and the arc of the final finished plate surface cannot match the arc in the BIM model, ultimately affecting the decoration effect. Therefore, a new scheme is proposed for improvement. The new scheme adopts the "equal plate but unequal joint" method. The "decoration surface" of the BIM model of the new scheme completely coincides with that of the original scheme, only the jointing method has changed, and there is no obvious difference in the visual effect.

[0052] In order to realize the overall hyperbolic structure of the arc-shaped ceiling 3, it is necessary to adjust the horizontal spacing of the plates, that is, the plate joints. By setting a second connector 5 on the basic steel structure 1 and fixedly installing a pipe 2 on the second connector 5, multiple sections of the installation pipe 2 are connected to form a complete arc-shaped pipe, which fits the inner arc surface curvature of the basic steel structure 1. A first connector 4 is installed on the installation pipe 2, so as to more conveniently hang and connect the arc-shaped ceiling 3. Only a crane, a lifting platform and a few workers are needed to complete the construction, solving the technical problem of inconvenient construction of the large arc-shaped ceiling 3, greatly improving the construction efficiency, reducing the consumption of manpower and material resources, saving costs, and having good economic performance and popularization and application value.

[0053] Refer to Figure 1-5, this embodiment provides a large-scale arc-shaped ceiling system, including a base steel structure 1, installation pipes 2, arc-shaped ceiling panels 3, first connectors 4, and second connectors 5; the base steel structure 1 includes a grid structure composed of main keels 11 and secondary keels 12, which is convex in the vertical direction and also convex in the horizontal direction, forming an overall hyperbolic structure; the main keels 11 are made of H-shaped steel, the main keels 11 are arranged at intervals and in an arc shape, the secondary keels 12 are distributed at intervals in the length direction of the main keels 11 and are staggered with the main keels 11, and the main keels 11 are in an upwardly convex arc shape; the installation pipes 2 are horizontally arranged throughout the inner arc surface of the base steel structure 1, fixed to the inner side of the main keels 11, perpendicular to the main keels 11 and distributed at intervals in the length direction of the main keels 11, the installation pipes 2 are circular steel pipes, the installation pipes 2 are composed of multiple short pipes connected together, and the installation pipes 2 are integrally in an arc shape; the arc-shaped ceiling panels 3 are arranged on the installation pipes 2 and are distributed at intervals, the arc-shaped ceiling panels 3 are on an overall arc surface, and the overall arc curvature of the arc-shaped ceiling panels 3 fits the curvature of the inner arc surface of the base steel structure 1;

[0054] The arc-shaped ceiling panels 3 include four plate bodies, namely a first plate body 31, a second plate body 32, a third plate body 33, and a fourth plate body 34; each plate body of the arc-shaped ceiling panels 3 is an arc-shaped long strip plate, and inwardly bent flanges are provided on both sides of the outer arc surface of each plate body; the ends of the four plate bodies are spliced and arranged along the length direction of the main keel 11; the first plate body 31 is arranged at the bottom position of the main keel 11, the bottom end of the second plate body 32 is spliced with the top end of the first plate body 31, the top end of the second plate body 32 is spliced with the bottom end of the third plate body 33, and the top end of the third plate body 33 is spliced with the bottom end of the fourth plate body 34.

[0055] Refer to Figure 6, the first connecting member 4 is arranged between the installation pipe 2 and the arc-shaped ceiling 3 for fixing and adjusting the arc-shaped ceiling 3; the first connecting member 4 includes a first hoop 41, a connecting plate 42, a connecting angle code 43, and a clamping plate 44; the first hoop 41 is arranged around the installation pipe 2 and is arranged at intervals on the installation pipe 2, two first strip holes 45 are opened on the plate surface near both ends of the connecting plate 42, the first strip holes 45 are arranged along the length direction of the connecting plate 42, one side of the first strip holes 45 is fixed to the first hoop 41 by bolts, and the other side of the first strip holes 45 is fixed to the connecting angle code 43 by bolts; the connecting angle code 43 is an L-shaped plate, its vertical part is connected to the connecting plate 42 by bolts, and the horizontal part is fixed to the middle of the clamping plate 44 by bolts; the clamping plate 44 is a U-shaped strip plate with an opening downward, and both ends of the clamping plate 44 are clamped and arranged inside the folded edge of the arc-shaped ceiling 3; two second strip holes 46 are arranged on the plate surface near both ends of the clamping plate 44, the second strip holes 46 are arranged along the length direction of the clamping plate 44, and a fastening bolt 47 is arranged in the second strip holes 46 for pressing the clamping plate 44 and the arc-shaped ceiling 3 tightly. The clamping plate 44 and the hanging plate are clamped by the fastening bolt 47 instead of being fixedly connected, so that the fastening bolt 47 can slide in the second strip holes 46 after loosening, so that the clamping plate 44 can change its position in the hanging plate and increase flexibility.

[0056] Referring to Figure 7 , both ends of the clamping plate 44 and the folded edge of the arc-shaped ceiling 3 can also be fixed by self-tapping screws 48.

[0057] Referring to Figure 8 , the second connecting member 5 is arranged between the main keel 11 and the installation pipe 2 for fixing the installation pipe 2; the second connecting member 5 includes a first fixing plate 51, a second fixing plate 52, a tension bolt 53, and a second hoop 54; the first fixing plate 51 is a rectangular plate arranged on the bottom surface of the lower flange plate of the main keel 11, and the short side of the first fixing plate 51 extends beyond the lower flange of the main keel 11; the second fixing plate 52 includes two strip-shaped plates arranged on the top surface of the upper flange plate of the main keel 11, and both ends of the second fixing plate 52 extend beyond the upper flange of the main keel 11; the tension bolt 53 passes through the corner of the first fixing plate 51 and both ends of the second fixing plate 52 to fix the first fixing plate 51 and the second fixing plate 52 on the main keel 11; the second hoop 54 is in the shape of Ω and includes a ring part and an end part; the ring part of the second hoop 54 is buckled on the outer side surface of the installation pipe 2, and the end part is fixed on the first fixing plate 51 by a tension screw rod.

[0058] Referring to Figure 9 , the second connecting member 5 further includes a suspension rod 55. One end of the suspension rod 55 is arranged in the middle of the first fixing plate 51, and the other end of the suspension rod 55 is provided with a third fixing plate 56; the ring part of the second hoop 54 is buckled on the outer side surface of the installation pipe 2, and the end part is fixed on the third fixing plate 56 by bolts.

[0059] Referring to Figure 10-11, the four-section plate bodies are connected by an insertion core member 6; the insertion core member 6 is a U-shaped plate, one end of which is inserted and arranged on the inner side of the end of the plate body and fixed by bolts, and the other end extends outward for inserting another plate body.

[0060] The present invention also provides a construction method for the above-mentioned large-scale arc ceiling system, which includes the following steps:

[0061] Step 1, detailed design: Establish a BIM model of the overall arc ceiling 3. In the model, divide the arc ceiling 3 into four-section plate bodies in the length direction, and then determine the quantity, length and lateral spacing of each section of the plate body, and determine the jointing method, that is, the width of each plate is the same, and the lateral spacing between the plates is adjustable;

[0062] Step 2, modeling rehearsal: Scan the on-site basic steel structure 1, perform BIM modeling after collecting information, rehearse the installation process in the model, mark the installation points and determine the curvature, length and installation spacing of the installation pipe 2, and determine the hanging installation points of the arc ceiling 3 on the installation pipe 2;

[0063] Step 3, construction of the installation pipe 2: Make on-site marks according to the installation points of the installation pipe 2 determined in Step 1. After completing the marks, install the second connecting member 5 at the marked points, and then pass the installation pipe 2 through the second hoop 54 and fix it. The installation pipe 2 is installed by welding after fixing and then continuously passing through. Through preliminary shaping, an overall arc-shaped installation pipe 2 is formed to fit the inner arc surface curvature of the basic steel structure 1;

[0064] Step 4, mark the points of the installation pipe 2 according to the hanging installation points in Step 1 to facilitate the installation of the first connecting member 4;

[0065] Step 5, installation of the arc ceiling 3: First, install the first plate body 31, hoist the first plate body 31 to the installation position, install the first connecting member 4 according to the marked points in Step 3, fix the first hoop 41 to the installation pipe 2, and snap and fix the clamping plate 44 to the inner side of the folded edge of the first plate body 31, and sequentially complete the installation of the first plate body 31; then install the second plate body 32, hoist the second plate body 32 and splice and fix the end of the second plate body 32 with the end of the first plate body 31; then repeat the above operations to sequentially complete the installation of the third plate body 33 and the fourth plate body 34;

[0066] Step 6, adjustment of the arc ceiling 3: Observe from multiple angles and multiple positions on-site, and adjust the arc ceiling 3 according to the actual visual and visual effects, including adjusting the plate spacing, curvature and angle of the arc ceiling 3;

[0067] Adjustment of the plate spacing: Adjust the position of the first hoop 41 on the installation pipe 2 to realize the lateral displacement of the arc ceiling 3, so as to realize the adjustment of the plate spacing;

[0068] Curvature adjustment: Adjust the connection positions of the first hoop 41, the connecting angle code 43 and the connecting plate 42 to adjust the distance between the arc-shaped ceiling 3 and the installation pipe 2, so as to realize the curvature adjustment of the arc-shaped ceiling 3;

[0069] Angle adjustment: Adjust the rotation angle of the connecting angle code 43 and the connecting plate 42 to adjust the plate surface orientation of the arc-shaped ceiling 3, so as to realize the angle adjustment of the arc-shaped ceiling 3;

[0070] The three adjustment methods cooperate with each other until the overall appearance of the inner arc surface of the arc-shaped ceiling 3 is smooth, flat, without obvious warping and undulation.

[0071] Furthermore, before the arc-shaped ceiling 3 is installed, pre-processing is carried out on the ground, including installing the core insert 6 at both ends of the second plate body 32 and the end of the third plate body 33; the clamping plate 44 is pre-clamped inside the folded edge of the arc-shaped ceiling 3 to facilitate subsequent installation and fixation work.

[0072] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A large curved ceiling system, characterized in that: It comprises a base steel structure (1), a mounting pipe (2), a curved ceiling (3), a first connecting piece (4), and a second connecting piece (5); The base steel structure (1) comprises a grid structure composed of a main keel (11) and a secondary keel (12), which is an outwardly convex curved surface in the vertical direction and also in the horizontal direction, and is a hyperbolic structure as a whole; The main keels (11) are arranged at intervals and in an arc shape, the secondary keels (12) are arranged at intervals in the length direction of the main keel (11) and are arranged in an interlaced manner with the main keel (11), and the main keel (11) is in an upwardly convex arc shape; The installation pipe (2) is horizontally arranged on the inner arc surface of the base steel structure (1), fixed to the inner side surface of the main keel (11), perpendicular to the main keel (11) and spaced apart in the length direction of the main keel (11), and the installation pipe (2) is generally arc-shaped; The curved ceiling (3) is arranged on the installation tube (2) and is distributed at intervals. The curved ceiling (3) is entirely on a curved surface, and the curvature of the entire curved surface of the curved ceiling (3) matches the curvature of the inner curved surface of the base steel structure (1). The curved ceiling (3) comprises four plate bodies, namely a first plate body (31), a second plate body (32), a third plate body (33) and a fourth plate body (34); each plate body of the curved ceiling (3) is a curved long strip plate, and both sides of the outer curved surface of each plate body are provided with inwardly bent edges; the ends of the four plate bodies are spliced ​​and arranged, and are extended along the length direction of the main keel (11); the first plate body (31) is arranged at the bottom position of the main keel (11), the bottom end of the second plate body (32) is spliced ​​with the top end of the first plate body (31), the top end of the second plate body (32) is spliced ​​with the bottom end of the third plate body (33), and the top end of the third plate body (33) is spliced ​​with the bottom end of the fourth plate body (34); The first connecting member (4) is arranged between the mounting tube (2) and the curved ceiling (3) and is used to fix and adjust the curved ceiling (3); the first connecting member (4) comprises a first clamp (41), a connecting plate (42), a connecting angle code (43), and a clamping plate (44); The first clamp (41) is disposed around the mounting tube (2) and is arranged at intervals on the mounting tube (2); two first holes (45) are provided on the plate surface of the connecting plate (42) near both ends; the first holes (45) are arranged along the length of the connecting plate (42); the first holes (45) on one side are fixed to the first clamp (41) by bolts, and the first holes (45) on the other side are fixed to the connecting angle code (43) by bolts; the connecting angle code (43) is an L-shaped plate, the vertical portion of which is connected to the connecting plate (42) by bolts, and the horizontal portion is fixed to the middle portion of the clamping plate (44) by bolts; the clamping plate (44) is a U-shaped strip plate with an opening facing downward, and the two ends of the clamping plate (44) are clamped and arranged inside the folded edge of the arc-shaped ceiling (3); The second connecting member (5) is arranged between the main keel (11) and the mounting tube (2) and is used to fix the mounting tube (2); By adjusting the first connecting piece, the angle, curvature and the width of the board gap between adjacent boards of the curved ceiling are adjusted accordingly.

2. A large curved ceiling system as claimed in claim 1, characterized in that: The main keel (11) is an H-shaped steel, the mounting pipe (2) is a round steel pipe, and the mounting pipe (2) is formed by connecting a plurality of short pipe sections.

3. A large curved ceiling system as claimed in claim 2, characterized in that: The second connecting member (5) comprises a first fixing plate (51), a second fixing plate (52), tension bolts (53), and a second clamp (54); the first fixing plate (51) is a rectangular plate, arranged on the bottom surface of the lower flange plate of the main keel (11), and the short side of the first fixing plate (51) exceeds the lower flange of the main keel (11); the second fixing plate (52) comprises two strip plates, arranged on the top surface of the upper flange plate of the main keel (11), and the two ends of the second fixing plate (52) exceed the upper flange of the main keel (11); the tension bolts (53) pass through the corners of the first fixing plate (51) and the two ends of the second fixing plate (52), and fix the first fixing plate (51) and the second fixing plate (52) on the main keel (11); the second clamp (54) is Ω-shaped, and comprises a ring portion and an end portion.

4. A large curved ceiling system as claimed in claim 3, characterized in that: The ring portion of the second clamp (54) is buckled onto the outer side surface of the mounting tube (2), and the end portion is fixed to the first fixing plate (51) via a tensioning screw.

5. A large curved ceiling system as claimed in claim 3, characterized in that: The second connecting member (5) further comprises a suspension rod (55), one end of which is arranged at the middle of the first fixing plate (51), and the other end of which is arranged at a third fixing plate (56); the ring portion of the second clamp (54) is buckled on the outer side surface of the mounting tube (2), and the end portion is fixed to the third fixing plate (56) by means of bolts.

6. A large curved ceiling system as claimed in claim 3, characterized in that: The two ends of the clamping plate (44) are fixed to the folded edges of the arc-shaped ceiling (3) by means of self-tapping screws (48).

7. A large curved ceiling system as claimed in claim 3, characterized in that: Two second holes (46) are arranged on the plate surface of the clamping plate (44) near the two ends. The second holes (46) are arranged along the length of the clamping plate (44). Fastening bolts (47) are arranged in the second holes (46) for fastening the clamping plate (44) and the arc-shaped ceiling (3).

8. A large curved ceiling system as claimed in claim 3, characterized in that: The four sections of the plate body are connected by means of an insert (6); the insert (6) is a U-shaped plate, one end of which is inserted into the inner side surface of the end of the plate body and fixed by bolts, and the other end of which is extended outwards and used for inserting another plate body.

9. A construction method for a large curved ceiling system as claimed in any one of claims 3 to 8, characterized in that: The steps include: Step 1: Deepen the design: Establish a BIM model of the overall curved ceiling (3), divide the curved ceiling (3) into four sections in the length direction in the model, and then determine the number, length and horizontal spacing of each section of the board, and determine the seam division method, that is, the width of each board is the same, and the horizontal spacing between the boards can be adjusted; Step 2: Modeling and rehearsal: Scan the on-site base steel structure (1), collect information, and then perform BIM modeling. Rehearse the installation process in the model, mark the installation points, determine the curvature, length, and installation spacing of the installation pipe (2), and determine the hanging installation points of the curved ceiling (3) on the installation pipe (2); Step 3, installation of the installation pipe (2): marking the installation point of the installation pipe (2) determined in step 2 on site, installing the second connection piece (5) at the marked point after marking, and then passing the installation pipe (2) through the second clamp (54) and fixing it. The installation pipe (2) is installed by welding after fixing and then continuing to pass through after welding. After preliminary shape finding, an overall arc-shaped installation pipe (2) is formed to fit the inner arc of the base steel structure (1); Step 4, marking the points on the installation tube (2) according to the hanging installation points in step 2, so as to facilitate the installation of the first connecting member (4); Step 5, installation of the curved ceiling (3): first install the first plate (31), hoist the first plate (31) to the installation position, install the first connecting piece (4) according to the marked point in step 3, fix the first clamp (41) to the installation pipe (2), clamp and fix the clamping plate (44) to the inner side of the folded edge of the first plate (31), and complete the installation of the first plate (31) in sequence; then install the second plate (32), hoist the second plate (32) and assemble and fix the end of the second plate (32) to the end of the first plate (31); then repeat the above operations to complete the installation of the third plate (33) and the fourth plate (34) in sequence; Step 6, adjusting the curved ceiling (3): observing at multiple angles and multiple positions on site, and adjusting the curved ceiling (3) according to actual perception and visual effects, including adjusting the board spacing, curvature and angle of the curved ceiling (3); Adjustment of the spacing between the panels: adjusting the position of the first clamp (41) on the mounting tube (2) to achieve lateral displacement of the curved ceiling (3), thereby achieving adjustment of the spacing between the panels; Curvature adjustment: adjusting the connection position of the first clamp (41), the connection angle code (43) and the connection plate (42) to adjust the distance between the curved ceiling (3) and the installation tube (2), thereby achieving curvature adjustment of the curved ceiling (3); Angle adjustment: adjusting the rotation angle of the connecting angle code (43) and the connecting plate (42) to adjust the plate surface orientation of the curved ceiling (3), thereby achieving angle adjustment of the curved ceiling (3); The three adjustment methods are performed in coordination with each other until the inner curved surface of the curved ceiling (3) is adjusted to be smooth and flat as a whole without obvious warping and undulation.

10. A construction method for a large curved ceiling system as claimed in claim 9, characterized in that: Before the installation of the curved ceiling (3), pre-processing is performed on the ground, including installing the inserts (6) at both ends of the second plate (32) and at the end of the third plate (33); and pre-clamping the clamping plate (44) on the inner side of the folded edge of the curved ceiling (3) to facilitate subsequent installation and fixing work.

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